Optimization Services, Tools and Advanced Process Control. ABB Service

Transcription

1 Optimization Services, Tools and Advanced Process Control ABB Service

2 Outline Assuring Optimal Performance Fingerprint Offerings and Examples Control Loop Performance Sustaining Performance ServicePort Advanced Process Control ABB Predict & Control MPC APC Services ABB MPC in 800xA ABB Service

3 Optimization Service Methodology 100 % Ideal Performance Gap 3. Sustain (ProcessPRO) Process Performance Potential Auto 2. Implement Manual Startup 1. Diagnose (Fingerprints) Continued Operation Goal: Measure and Reduce Performance Gap, Extend system life, Operate at the mechanical system constraints Time (years) ABB Service

4 ABB Fingerprint finds gaps, develops customer ROI Action Report Report Gap Analysis ROI Forecast Action Plan ROI Benchmark Findings Plan Interpret Analyze View Performance Evaluation Standard Methodology Analysis Expertise Performance Visualization People Process Tools Get Problem ABB Group October 29, 2013 Slide 4 Data Collection/Testing 12 to 24 hours at 5-second data Controller parameters Customer interview: process area and loop criticality definitions. OPC Collection Tools

5 ABB Advanced Services: Fingerprints are packaged diagnostic services Common Industrial Services : Boiler Alarm Loop Performance Control System Transition Analysis Batch Analysis Tuning ABB Group Group October 29, 2013 Slide 5

6 ABB Automation & Power World - May 18-20, 2010 CCH :00 Tuesday, room 351C Doug Reeder, Ted Matsko Loop Performance Fingerprint for a DuPont Monomers Plant ABB Service

7 1 Control Performance Issues Half life of Process Controllers Given: a 100 PID loops all tuned at once. Then: it is estimated that with in 6 months, 50 of these loops will have a degradation in performance. Simple PID Utilization Loop performance degradation Months 35% 15% 30% 25% Manual Operation Output Out of range Increasing Variability Improving process PID Controllers are designed to: Regulate the process Reduce product instability Improve operations However, ABB is finding that PID Automation: PID loops are not being maintained PID loops have degraded PID loops are standing in the way of production and performance. ABB Group October ABB Service 29, 2013 Slide 7

8 LoopAnalyzer Tool: Control Loop Diagnoses CONTROL PROCESS SIGNAL CONDITIONING C1: Manual P1: FCE Out of Range S1: Quantized C2: Oscillating Setpoint P2: FCE Size S2: Excessive Noise C3: Error Deadband P3: FCE Problem S3: Spikes C4: Offset P4: FCE Leakage S4: Step Out C5: Over Control P5: Intermittent Disturbance S5: Data Compression C6: Slow Control P6: Persistent Disturbance S6: Over Filtered C7: FCE Travel P7: Questionable S7: Sampling Rate C8: Slow Update Rate S8: No Signal C9: Questionable Control S9: MV Out of Range S10: Questionable FCE = Final Control Element ABB Service

9 Loop Fingerprint Oscillating Loops When a loop oscillates in automatic mode and there is not evidence of an external disturbance, over tuning is a possible cause. Power spectrum shows two frequencies of interest This loop is in the TFE Synthesis area ABB Service

10 Loop Fingerprint Final Control Element Problem This is a flow controller that is the inner loop of a cascade. Exhibits classic stiction Controller output ramps up and down in triangular pattern Process variable moves in square wave ABB Service

11 Loop Fingerprint Report The report highlights some loops, as shown in the previous slides and summarizes the results in tables. This table is for the TFE Synthesis section of the plant. ABB Service

12 Loop Fingerprint Plantwide Disturbance Analysis Disturbances in chemical plants act on many process variables TC1 TI2 TI3 TI6 DP2 DP1 TI4 TI7 TI5 LI2 LC1 TI1 ABB Service Disturbances can propagate counter flow because of recycle and thermal integration

13 Loop Fingerprint PCA Cluster Example Find signals with similar patterns, probably due to disturbances Not looking for oscillating signals Here all signals are in two columns that are adjacent ABB Service

14 2 Loop Optimization implements improvements Goal: Improve current performance level Scope based on Diagnose phase Focused, scheduled activities Proven practices Proactive and collaborative ABB-managed improvement program Service 1 2 Diagnose (Fingerprints) 3 Implement (HandsOn) Sustain (Scan/Track) Increased performance Solution categories: Hardware Operations Tuning Application Process ABB Group October ABB Service 29, 2013 Slide 14

15 2 Workbench: Implementation improvements Visualization and Setup Analysis Standard Reporting Tool Workbench Identification Collection Tuning and Simulation ABB Group October ABB 29, Service 2013 Slide 15

16 ABB Automation & Power World: April 23-26, 2012 C549I 11:15 Wednesday, April 25, 2012 (room 371D) Batch Process Optimization BASF Polymerization Reactor ABB Service

17 BASF Batch Reactor Optimization Process Economics - Quality Control and Production Rate Process Economics is tied to two things Quality Control Decrease cost, i.e. lower energy Increase yield at same quality Reduce offspec losses Value increases with quality Production Rate Hold fixed costs constant Increase production rate, revenue For a batch process, production rate means cycle time For this polyester product, Step 4 dominates ABB Inc. October ABB Service 29, 2013 Slide 17

18 BASF Batch Reactor Optimization Process Economics - Quality Control and Production Rate Quality variance is very low for this product Batch held until all specs met èincrease time Lab tests repeated, manual adjustments This plant is Production Rate limited on this product Long cycle time 5 day x 24 hr work week 120 hrs working time 60 hrs = 2; 40 hrs = 3 batches Opportunity Reduce variance of step times ABB Inc. October ABB Service 29, 2013 Slide 18

19 BASF Batch Reactor Optimization Reducing Batch Cycle Times This plot confirms conclusion about vacuum and batch cycle time Real data is not always pretty (scatter) Due to lab measurement, operator manual operations, unknown contaminants Conclusion: Investigate cost to improve vacuum. Achieved cycle time improvements. ABB Inc. October ABB Service 29, 2013 Slide 19 Step4 Elapsed Time(Vacuum)

20 3 Loop Optimization helps sustain customer results Goal: Maintain improved performance level Adjust maintenance operating procedures Adjust standard operating procedures Proactive and collaborative Remote process monitoring Specifics are a function of the Implement phase Periodic monitoring of key process indices utilizing local or remote expertise Service 1 2 Diagnose (Fingerprints) 3 Implement (HandsOn) Sustain (Scan/Track) Increased performance ABB Group October ABB Service 29, 2013 Slide 20

21 ABB ServicePort TM Secure, remote delivery for Scan and Track Secure portal residing at customer site through which plant personnel and ABB experts can access: Configuration tools Diagnostic applications Improvement activities Performance-sustaining troubleshooting Scanning software that deploys agreed actions. Full Size ABB can connect to any system through ServicePort and implement fixes to diagnosed problems. ABB Group October ABB Service 29, 2013 Slide 21 Desk top

22 Workbench Tools Improve efficiency and quality of service results Data Collection DL400 Diagnose AGP400 Loop Performance Fingerprint Solution Performance Management Problem Loop Analyzer Signal Analyzer Implement Loop Tuning LoopTune Batch and Grade Change Analysis Sequence Analyzer Continuous Improvement at Maximum efficiency Loop Performance Monitoring ServicePort Loop Performance Channel ABB Group October 29, 2013 Slide 22

23 ServicePort + Channels ServicePort Base Unit Process Channels ABB Group October 29, 2013 Slide 23 Control Loop Quality Control System Mine Hoist Equipment Channels Harmony 800xA Cyber Security Remote Access Platform

24 ABB ServicePort: Access to experts, reduces costs ABB Group October 29, 2013 Slide 24

25 SCAN Performance Service Reports Statistical Evaluation of Historical KPI s performed twice a year Ensures stability of KPI s Reduces the risk of false positives Keep up to date with process Crucial to ensure continuous improvement

26 Sustain: track KPIs to ensure improvement Q1 Q2 Q3 Q4 Production increase! KPI Tracking Continuous Improvement Variability decrease! Total RES 1 CD MDL ABB Group October 29, 2013 Slide 26 ABB Service Delivery Schedule

27 What s APC? APC Advanced Process Control ARC - Advanced Regulatory Control MPC Model Predictive Control MIMO Multiple Inputs, Multiple Outputs Constraints Process or Physical Limits Linear Programming Cost Minimization IMP Inferential Modeling Platform Scheduling and Batch optimization ABB Service

28 ABB s Predict and Control APC Solution Features True Multivariable Control State Space, Model Predictive Control (MPC) Structure Subspace and Prediction Error model identification methods Constraints (MVs and CVs): prioritize up to 30 classes OPC connectivity to process data ABB Service Inferential Modeling Platform (IMP) to infer variables or properties that are difficult to measure

29 APC - Predict and Control Allows safe operation closer to constraints Smooths operation by predicting effects of control moves and compensating Works best when base level controls are optimized ABB Service

30 APC Fingerprint Features Uses Predict and Control Engineering Tools Quantifies critical process interactions Determines $ benefits from APC Suggests best structure Suggests required MV s, CV s, DV s Determines additional measurement requirements and value Allows customer to get the best APC product for their plant ABB Service

31 Optimize IT Predict & Control Performance 3 simulation runs of the HOF problem 2nd Comparing 1st 3rd example, DMC P&C typical P&C with like DMC with tuning, Kalman Filter compositions treatment Kalman estimate Filter of for (blue disturbances. estimate and red) for to state have feedback, Using disturbances. additional large using deviations the Shell Large PVs Heavy caused reduction Oil by in Fractionator unmeasured PV Further deviation. problem reduction cooling duty with in PV unmeasured disturbances, deviation. disturbances (magenta line, and modeling lower grid) error ABB Service

32 Predict & Control Performance Ammonia Stripping Operation APC Minimizes operating cost (steam, caustic, & acid) Regulates ph and NH3 Enforces environmental limits on waste stream 9% reduction in unit operating cost ROI: 6 months

33 Predict & Control Performance Butadiene Purification Process APC Reduction of steam consumption Reduction of solvent use Lower product quality variability Key process variables closer to setpoint targets Less work load for operators at all levels ROI: 11 months

34 APC Recommissioning Services For APC controllers that are not in service or not performing as expected Reevaluate APC design Retest and rebuild MPC models Simulate and retune controller Monitor performance Recommissioning services available for various APC software ABB Service

35 DMCplus 800xA Interface o ABB Interface tags defined in 800xA to link DMCplus tags to control loop and analog tags o 800xA library created and can be reused for different DMCplus applications O p t i m i z e r C o n t r o l l e r DMCContType Out In S u b C o n t r o l DMCSubType M V M V F F o r C V ReadMMS Write MMS MMS DpaPidCC RealIOMMSRe ad or RealMMSRead DpaAnalogOutCC (Future) Read MMS RealIO or Real ABB Service

36 DMCplus 800xA Interface MV Faceplate ABB Service

37 DMCplus 800xA Interface CV Faceplate ABB Service

38 MPC in 800xA Project Workflow Controller design off line Perform plant testing Use Model Builder to create model Use closed loop simulation module to calculate initial set of tuning parameters Export model and parameters Controller implementation in 800xA Create application in Control Builder Import model and tuning parameters in 800xA service using Plant Explorer On-line tuning using 800xA faceplates

39 Model and Control Design Tool Environment for handling data import and data set manipulation Subspace identification and graphical methods for modelling Initial controller design Controller export for subsequent import in runtime environment

40 Controller Configuration in 800xA Control Module for MPC Configured from CB or FD Control connections between CM and level 1 controllers Faceplates for interaction Mode logic Constraint definitions Options to connect signals Graphical connections Textual connections

41 PV and MV Faceplates

42 Overall Benefits of the ABB approach Highest controller performance Choice of right technology for your process Comprehensive performance service packages ABB experience in over 500 APC implementations Lower overall cost of ownership modular and scalable software packages user friendly modeling environment to lower implementation effort and model maintenance Low project risk Process know how and experience Strict project management procedures Results: High ROI at low risk

43 ABB Service